Home / 21,186.54-29,242.80-14,474.88

Finding the Fourth Proportional to 21,186.54, 29,242.80 and 14,474.88

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Solution

The fourth proportional to 21,186.54, 29,242.80 and 14,474.88 is: 19,979.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.54 : 29,242.80 = 14,474.88 : x
  2. Step 2: Convert to fraction form
    21,186.54/29,242.80 = 14,474.88/x
  3. Step 3: Cross multiply
    21,186.54x = 29,242.80 × 14,474.88
  4. Step 4: Simplify right side
    21,186.54x = 423,286,020.86
  5. Step 5: Solve for x
    x = 423,286,020.86/21,186.54
  6. Step 6: Final answer
    x = 19,979.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.